Hack saw



Feb. 13, 1923.

N. H. COWELL E AL.

HACK SAW.

FILED JuLYl, 1920.

Patented Feb. i3, 1923. Y L j .ii/airain stares arent IJ'EILSON` H. COWEIL, OF NEW YORK, AND EDVIARD NIEDERMAN, 0F ELMHURST, NEW YORK.

HACK SAW.

Application filed July 1, 1920. Serial No. 393,228.

To ZZ cli/tom it may concer/21, tion with respect to the other, while at the Be it known that we, Neilson H. CownLL same time, permitting a i tree telescoping 55 and EDWARD Ninnnnimv, both citizens ogt movement ot the sections. Section 9 is the United States, and residents, respecthreaded as at 13 and is provided with one tively,o the city oi? New York, borough or' or more slits 14. The Vend of section E) Manhattan, in the county and State ot New merges into a bevel portion 15 which is York, and Elmhurst, borough of Queens. in adapted to coact with the nut 1G which nut 60 the county ot Queens and State ot New is provided adjacent one end with a taper- York, have invented anew and useful Hack ing section 17 adapted to mate with the Saw, of which the following is a full, clear, beveled section 15. `Whenever the nut 16 is and exact description. j l tightened the threaded end oit the section 9 This invention relates to hacksaw trames, is squeezed against section 10 and thereby 65 and has for an object to provide an improved the two sections are rigidly locked together. construction whereby dilerent sized haclr- A libre hand-hold 18vis arranged at the juncsaws may be readily utilized. ture of members 8 and 10, though rubber or Another object of the invention is to pro other suitable material could advantavide an adjustable hacksaw with means for geously be used, said hand-hold 18 being` 70 gripping and holding haclrsaws which have formed with depressions 19 suitable for rebeen broken ott either at one or both ends. ceiving the fingers of the operator, to more 20 A further object of the invention is to conveniently guide the saw when operated.

provide an improved jaw 'for haclsaws In order to hold the saw blade 1 in place wherein not only means are provided for enclamping jaws 3 and 4 are provided which 75 gaging eyes in a haclrsaw but gripping jaws are carried by heads 5 and 6 respectively, the

are provided which will grip the end of a details of which are shown in Figures 2 to hacksaw and hold the same in place. 4 inclusive and to which reference is now In the accompanying drawings: had. From these views it will be observed Figure 1 is a side view oit a hacksaw frame that the head 5 is tubular and is formed 80 with a hacksaw arranged therein. said trame with a cylindrical bore 20 in which is ardisclosing an embodiment of the invention, ranged a sleeve 38 which in turn is Formed certain parts being broken away for better with a conical bore 21, in which slidably illustrating the construction. tits conical member 22. Said conical inem- Figure 2 is a fragmentary sectional view ber 22 carries jaws 34 and 35 which are preit- 85 through Figure 1 taken on lines 2 2 in `the erably hinged together by means of pintle direction of the arrows. pin 36. The sleeve 38 is provided with a Figure 3 is a sectional view through Figthreaded section 39 for receiving the thread ure 2 taken on lines 3 3. ed end 40 of the handle stem 41 and between Figure 4 is a transverse sectional view the head and the handle 25 is arranged a 90 taken on lines 4 4 of Figure 2 and Figure cup-shaped member 42, having in its annu- 5 is a cross sectional view through Figure 1 lar wall bores 31 for receiving the pins 29 40 on lines 5 5. i carried by the head Thus it will be Referring to the accompanying drawings noted that the sleeve 38 may be made to by numerals -1 indicates a hacksaw which is move within the head 5 by turning the 95 positioned in the frame 2 and held in place handle 25 which is threaded to -the stem 41 by the jaws 3 and 4. Frame 2 is provided and thereby the jaw member 3 1s drawn o r with heads 5' and 6 which form a part of released to hold the saw 1 in proper posithe upstanding tubular members 7 and 8 of p tion. the frame 2, said tubular upstanding mem The jaw 34 may be provided with a pin 100 bers merging into horizontal connecting sec- 33 for extending into the eye of the saw 1 tions 9 and 10, section 10 telescoping into it the saw has an eye. The outer end of section 9. As indicated in Figure 5, section the jaw will grip the saw and hold the same 10 is provided with a longitudinal groove 11, 4 in place without the aid of pin 33, in case it receiving one or more pins 12 whereby there is done away with or broken oil. The jaw 105 will be ne independent rotation of one seca 4 could be constructed sircilar to jaw 3 al`x though anjvv other approved tj pe will serve the purpose, since only one adjustable jaw is necessarj7 to holdutlie saw 'i in position.

What we claim is:

l. A head and jaw Jor hacksaws compri inga' tubular member acting aS a heath a cylindrical member` fitted into said tuln'rla'r member and provided with a taperingbore extending for most oit its length, and a threaded section at the end ot the taperinfii bore.r Said cylindrical member being` reciprocable in said tubuiar member, a handle receiving member Screwed int-o Said threaded Section and forming one unit. with the cylindrical member, a handle for holding; 'the threaded member in position, a cup shaped washer between Said handle and said tilbular member for receiving the inner end ci? said cj/'lindrical member and a pair of' pir# otally` mounted awe arranged With one' ta`- pered end fitted into said tapering bore to cooperate therewith and the other end pro jectingthlerefrom and acting' aS a gripping means fory rece'iviig a saw blade.

2. A head and a for hacksaws comprising `a tubular member acting` as ai head, a cylindrical member fitted into said tubular member and provided with a tapering bore extending tor moet ot its entire length and merging into a threaded SectionY 'jor the remaining part of its length, a tensioning member threaded into said threaded section forming va unit with said cylindrical mein ber, a cupped washer surrounding Said tenA Sioning member adjacent the threaded portionV of said cylindrical member 'for permitting the inner end ot the latter to advance beyond the end of said tubular member7 and a pair of jaws pirotally connected together near their centers having one end proj ecting into said tapering bore so* as tov be *forced against the eide walls' o'l' the taperi'i'ig bore when said threaded clamping` member operated in a given `direction` one of" said jaws being provided with. a bore and the other with a pin projecting into said bore and both of Said jaws being provided with gripping surfaces adjacentsaid pin whereby a saw may be j aositioned between the latter surfaces While said pin projects through a hole in the saw;

NnLeoN n. otmntn EDWARD NIEDERMAN., 

